Multi-row multi-pin electric connector

By using a common-mode structure design and splicing fixing method, the problems of signal transmission quality and production efficiency of multi-row, multi-pin electrical connectors are solved, achieving high component consistency and simplifying terminal operation, thereby reducing production costs.

CN223713131UActive Publication Date: 2025-12-23东莞广晋精密电子有限公司
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Patent Information

Application Number
CN202423212907.2
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-12-25
Publication Date
2025-12-23
Estimated Expiration
2034-12-25

AI Technical Summary

Technical Problem

Existing multi-row, multi-pin electrical connectors suffer from poor signal transmission quality and poor contact due to inconsistent component flatness, and the insertion molding of terminals is difficult, resulting in low production efficiency.

Method used

The multi-row, multi-pin electrical connector with a common-mode structure design includes first, second, and third terminal assemblies and fasteners. It achieves high consistency of components through matching mounting slots and splicing structures, and simplifies the insertion and bending process of terminals.

Benefits of technology

It improves signal transmission quality, avoids poor contact problems, simplifies the terminal placement process, reduces production costs and cycle time, and improves production efficiency.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to a multi-row multi-pin electric connector, which comprises a first terminal assembly, a second terminal assembly, a third terminal assembly, a left side fixing piece and a right side fixing piece, and is characterized in that the first terminal assembly, the second terminal assembly and the third terminal assembly are longitudinally arranged and distributed; the first terminal assembly and the third terminal assembly are respectively spliced and combined with the second terminal assembly, and the left side fixing piece and the right side fixing piece are respectively arranged on the left side and the right side of the first terminal assembly, the second terminal assembly and the third terminal assembly. And the left sides and the right sides of the first terminal assembly, the second terminal assembly and the third terminal assembly are fixedly spliced with the left side fixing piece and the right side fixing piece respectively.
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Description

TECHNICAL FIELD

[0001] The utility model relates to the field of electric connector especially a kind of multi-row multi-pin electric connector. BACKGROUND

[0002] With the continuous development of science and technology, the types and quantities of electronic products are increasing, and the demand for electric connectors is also growing. Multi-row multi-pin electric connectors are popular because they can meet the connection needs of different electronic devices. Multi-row multi-pin electric connectors can meet customers' customized needs due to their flexibility and scalability. In the prior art, the one-time forming of multi-row multi-pin electric connectors affects the transmission quality of signals due to inconsistent flatness between components, which may cause poor contact problems and increase the failure rate of electric connectors. At the same time, in the prior art, it is difficult to place the insert molding terminal and the cycle is long, which leads to a series of plastic filling problems, thereby reducing production efficiency. SUMMARY

[0003] To solve the above problems, the utility model provides a kind of multi-row multi-pin electric connector.

[0004] To achieve the above purpose, the utility model adopts the following technical scheme: the utility model relates to a kind of multi-row multi-pin electric connector, including first terminal assembly, second terminal assembly, third terminal assembly, left side fixed piece and right side fixed piece, the first terminal assembly, second terminal assembly and third terminal assembly are longitudinally arranged and distributed, the first terminal assembly and third terminal assembly are respectively spliced with second terminal assembly, the left side fixed piece and the right side fixed piece are respectively arranged in the left and right sides of first terminal assembly, second terminal assembly, third terminal assembly, the left and right sides of the first terminal assembly, second terminal assembly, third terminal assembly are respectively fixedly spliced with left side fixed piece and right side fixed piece.

[0005] Preferably, the left side fixed piece is provided with a first left side mounting groove, a second left side mounting groove and a third left side mounting groove, and the right side fixed piece is provided with a first right side mounting groove, a second right side mounting groove and a third right side mounting groove; the left and right sides of the first terminal assembly are respectively spliced and fixed with the first left side mounting groove and the first right side mounting groove, the left and right sides of the second terminal assembly are respectively spliced and fixed with the second left side mounting groove and the second right side mounting groove, and the left and right sides of the third terminal assembly are respectively spliced and fixed with the third left side mounting groove and the third right side mounting groove.

[0006] Preferably, the first terminal assembly includes a first main body, a plurality of first terminal grooves are provided on the first main body, the first terminal grooves penetrate the first main body, a plurality of first terminals are provided on the first terminal assembly, and the first terminals are inserted into the first terminal grooves.

[0007] Preferably, the first body piece is provided with a pair of first mounting portions on the left and right sides thereof, which are matched with the first left mounting slot and the first right mounting slot, and the first body piece is spliced and mounted with the first left mounting slot and the first right mounting slot through the first mounting portions.

[0008] Preferably, the second terminal assembly comprises a second body piece, the second body piece is provided with a plurality of second terminal slots and third terminal slots, the second terminal slots and the third terminal slots penetrate the second body piece, the second terminal assembly is provided with a plurality of first terminals and second terminals, the first terminals are inserted into the second terminal slots, and the second terminals are inserted into the third terminal slots.

[0009] Preferably, the second body piece is provided with a pair of second mounting portions on the left and right sides thereof, which are matched with the second left mounting slot and the second right mounting slot, and the second body piece is spliced and mounted with the second left mounting slot and the second right mounting slot through the second mounting portions.

[0010] Preferably, the third terminal assembly comprises a third body piece, the third body piece is provided with a plurality of fourth terminal slots and fifth terminal slots, the fourth terminal slots and the fifth terminal slots penetrate the third body piece, the third terminal assembly is provided with a plurality of first terminals and second terminals, the first terminals are inserted into the fourth terminal slots, and the second terminals are inserted into the fifth terminal slots.

[0011] Preferably, the third body piece is provided with a pair of third mounting portions on the left and right sides thereof, which are matched with the third left mounting slot and the third right mounting slot, and the third body piece is spliced and mounted with the third left mounting slot and the third right mounting slot through the third mounting portions.

[0012] Preferably, the first terminal assembly is provided with a plurality of first splicing slots, the first splicing slots are arranged on the side of the first terminal assembly facing the second terminal assembly; the third terminal assembly is provided with a plurality of second splicing slots, the second splicing slots are arranged on the side of the third terminal assembly facing the second terminal assembly; the second terminal assembly is provided with a first splicing portion and a second splicing portion on the front and rear end faces thereof, the first splicing portion is spliced and matched with the first splicing slots, so that the first terminal assembly and the second terminal assembly are connected in a matched mode, and the second splicing portion is spliced and matched with the second splicing slots, so that the third terminal assembly and the second terminal assembly are connected in a matched mode.

[0013] Preferably, the first splicing part comprises a first splicing connecting rib and a first splicing fastener, the first splicing fastener is connected with the second main body part through the first splicing connecting rib, and the first splicing fastener is matched with the first splicing groove; the second splicing part comprises a second splicing connecting rib and a second splicing fastener, the second splicing fastener is connected with the second main body part through the second splicing connecting rib, and the second splicing fastener is matched with the second splicing groove.

[0014] The utility model discloses beneficial effect lies in: the utility model relates to a kind of multi-row multi-pin electric connector, the utility model, first main body piece and third main body piece are common mode structure, left side fixing piece and right side fixing piece are common mode structure, the height of first main body piece, second main body piece, third main body piece, left side fixing piece and right side fixing piece is consistent and designed with intermatching splicing fixed structure, can effectively reduce mold cost, the planeness of the first main body piece, second main body piece, third main body piece, left side fixing piece and right side fixing piece after combination keeps consistent, avoid affecting the transmission quality of signal and the problem of poor contact.

[0015] In the utility model, the first terminal and the second terminal can be directly inserted into the first main body part, the second main body part and the third main body part and bent, forming a first terminal assembly, a second terminal assembly and a third terminal assembly, so that the insert molding terminal placement operation is simple, the production cycle is effectively reduced, and the problem of poor plastic filling is avoided.

[0016] In addition, the first terminal assembly, the second terminal assembly, the third terminal assembly, the left side fixing piece and the right side fixing piece in the utility model are designed for common use, and the mold parts can be flexibly interchanged, greatly improving the production efficiency. The first main body part, the second main body part and the third main body part can be flexibly interchanged, and the user can flexibly match and assemble according to the demand of the electric connector, and the problem of overall scrapping caused by single item defect can be effectively eliminated. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the overall structure schematic diagram of the multi-row multi-pin electric connector of the utility model.

[0018] Figure 2 It is the split structure schematic diagram of the multi-row multi-pin electric connector of the utility model.

[0019] Figure 3 It is the overhead structure schematic diagram of the multi-row multi-pin electric connector of the utility model.

[0020] Figure 4 It is the assembly schematic diagram of the first splicing part and the first splicing groove in the utility model Figure 3

[0021] ​Figure 5 is the utility model Figure 3 The assembly schematic view of the second splicing part and the second splicing groove in B place in the utility model.

[0022] Figure 6 is the structure schematic view of the left fixing piece of the utility model.

[0023] Figure 7 is the structure schematic view of the utility model with the side fixing piece.

[0024] Figure 8 is the assembly schematic view of the first terminal assembly of the utility model.

[0025] Figure 9 is the structure schematic view of the first terminal assembly of the utility model.

[0026] Figure 10 is the assembly schematic view of the second terminal assembly of the utility model.

[0027] Figure 11 is the structure schematic view of the second terminal assembly of the utility model.

[0028] Figure 12 is the assembly schematic view of the third terminal assembly of the utility model.

[0029] Figure 13 is the structure schematic view of the third terminal assembly of the utility model.

[0030] Figure 14 is the structure schematic view of the first terminal assembly of the embodiment two of the utility model.

[0031] Figure 15 is the structure schematic view of the second terminal assembly of the embodiment two of the utility model.

[0032] Figure 16 is the structure schematic view of the third terminal assembly of the embodiment two of the utility model.

[0033] Figure 17 is the split schematic view of the first terminal assembly, the second terminal assembly and the third terminal assembly and the plastic body in the embodiment two of the utility model.

[0034] Figure 18 is the structure schematic view of the overall structure schematic view of the multiple-row multiple-pin position electric connector of the embodiment two of the utility model.

[0035] Reference signs

[0036] 1. first terminal assembly;11. first main piece;111. first terminal groove;12. first installation part;121. first installation connecting rib;122. first installation buckle;13. first splicing groove;

[0037] 2. second terminal assembly; 21. second main body; 211. second terminal slot; 212. third terminal slot; 22. second mounting portion; 221. second mounting connecting rib; 222. second mounting buckle; 23. first splicing portion; 231. first splicing connecting rib; 232. first splicing buckle; 24. second splicing portion; 241. second splicing connecting rib; 242. second splicing buckle; 3. third terminal assembly; 31. third main body; 311. fourth terminal slot; 312. fifth terminal slot; 32. third mounting portion; 321. third mounting connecting rib; 322. third mounting buckle; 33. second splicing slot;

[0038] 4. left side fixing member; 41. first left side mounting slot; 42. second left side mounting slot; 43. third left side mounting slot;

[0039] 5. right side fixing member; 51. first right side mounting slot; 52. second right side mounting slot; 53. third right side mounting slot;

[0040] 6. first terminal; 61. first bending section;

[0041] 7. second terminal; 71. second bending section;

[0042] 8. plastic body. DETAILED DESCRIPTION

[0043] Example one:

[0044] Please see Figures 1-13 As shown in the figure, the utility model relates to a kind of multi-row multi-pin electric connector, including first terminal assembly 1, second terminal assembly 2, third terminal assembly 3, left side fixing member 4 and right side fixing member 5, the first terminal assembly 1, second terminal assembly 2 and third terminal assembly 3 are arranged longitudinally, the first terminal assembly 1 and third terminal assembly 3 are respectively spliced with second terminal assembly 2, the left side fixing member 4 and right side fixing member 5 are respectively arranged in the left and right sides of first terminal assembly 1, second terminal assembly 2, third terminal assembly 3, and the left and right sides of the first terminal assembly 1, second terminal assembly 2, third terminal assembly 3 are respectively fixed with left side fixing member 4 and right side fixing member 5 splicing.

[0045] The left fixing member 4 and the right fixing member 5 are of a common mold structure in the embodiment, and are designed with holding structures matched with other film assemblies, so that the mold opening cost can be effectively reduced. Further, the left fixing member 4 is provided with a first left mounting groove 41, a second left mounting groove 42 and a third left mounting groove 43, and the right fixing member 5 is provided with a first right mounting groove 51, a second right mounting groove 52 and a third right mounting groove 53. The first terminal assembly 1 is fixedly spliced with the first left mounting groove 41 and the first right mounting groove 51 on the left and right sides, respectively, the second terminal assembly 2 is fixedly spliced with the second left mounting groove 42 and the second right mounting groove 52 on the left and right sides, respectively, and the third terminal assembly 3 is fixedly spliced with the third left mounting groove 43 and the third right mounting groove 53 on the left and right sides, respectively.

[0046] In the embodiment, the first terminal assembly 1 comprises a first body member 11, and a plurality of first terminal grooves 111 are arranged on the first body member 11. The first terminal grooves 111 are arranged in two rows on the first body member 11 and penetrate the first body member 11. A plurality of first terminals 6 are arranged on the first terminal assembly 1 and inserted into the first terminal grooves 111.

[0047] Further, a pair of first mounting portions 12 matched with the first left mounting groove 41 and the first right mounting groove 51 are arranged on the left and right sides of the first body member 11. The first body member 11 is spliced and mounted with the first left mounting groove 41 and the first right mounting groove 51 through the first mounting portions 12, so that the first body member 11 is spliced and fixed on the left fixing member 4 and the right fixing member 5. Further, the first mounting portion 12 comprises a first mounting connecting rib 121 and a first mounting buckle 122, and the first mounting buckle 122 is connected with the first body member 11 through the first mounting connecting rib 121. The depth of the first mounting buckle 122 is matched with that of the first left mounting groove 41 and the first right mounting groove 51. When the first mounting buckles 122 on the left and right sides of the first body member 11 are spliced into the first left mounting groove 41 and the first right mounting groove 51, the height of the first body member 11 is flush with that of the left fixing member 4 and the right fixing member 5, so that the flatness between the first body member 11 and the left fixing member 4 and the right fixing member 5 is consistent.

[0048] In the embodiment, the second terminal assembly 2 comprises a second main piece 21, a plurality of second terminal grooves 211 and third terminal grooves 212 are arranged on the second main piece 21, the second terminal grooves 211 and the third terminal grooves 212 are arranged side by side on the second main piece 21, the second terminal grooves 211 and the third terminal grooves 212 respectively penetrate the second main piece 21, a plurality of first terminals 6 and second terminals 7 are arranged on the second terminal assembly 2, the first terminals 6 are inserted into the second terminal grooves 211, and the second terminals 7 are inserted into the third terminal grooves 212.

[0049] Further, a pair of second mounting portions 22 matched with the second left mounting groove 42 and the second right mounting groove 52 are arranged on the left and right sides of the second main piece 21, the second main piece 21 is respectively spliced and mounted with the second left mounting groove 42 and the second right mounting groove 52 through the second mounting portions 22, so that the second main piece 21 is spliced and fixed on the left fixing piece 4 and the right fixing piece 5. Further, the second mounting portion 22 comprises a second mounting connecting rib 221 and a second mounting buckle 222, the second mounting buckle 222 is connected with the second main piece 21 through the second mounting connecting rib 221. The depth of the second mounting buckle 222 matches with the second left mounting groove 42 and the second right mounting groove 52, when the second mounting buckles 222 on the two sides of the second main piece 21 are spliced and entered into the second left mounting groove 42 and the second right mounting groove 52, the second main piece 21 is flush with the left fixing piece 4 and the right fixing piece 5 in height, so as to ensure that the flatness between the second main piece 21 and the left fixing piece 4 and the right fixing piece 5 is consistent.

[0050] In the embodiment, the third terminal assembly 3 comprises a third main piece 31, a plurality of fourth terminal grooves 311 and fifth terminal grooves 312 are arranged on the third main piece 31, the fourth terminal grooves 311 and the fifth terminal grooves 312 penetrate the third main piece 31, a plurality of first terminals 6 and second terminals 7 are arranged on the third terminal assembly 3, the first terminals 6 are inserted into the fourth terminal grooves 311, and the second terminals 7 are inserted into the fifth terminal grooves 312.

[0051] Further, the third body piece 31 is provided with a pair of third installation parts 32 matched with the third left installation slot 43 and the third right installation slot 53 on the left and right sides, and the third body piece 31 is spliced and installed with the third left installation slot 43 and the third right installation slot 53 through the third installation part 32, so that the third body piece 31 is spliced and fixed on the left fixing part 4 and the right fixing part 5. Further, the third installation part 32 comprises a third installation connecting rib 321 and a third installation buckle 322, and the third installation buckle 322 is connected with the third body piece 31 through the third installation connecting rib 321. The third installation buckle 322 is matched with the third left installation slot 43 and the third right installation slot 53 in depth, and when the third installation buckle 322 on the both sides of the third body piece 31 is spliced into the third left installation slot 43 and the third right installation slot 53, the third body piece 31 is flush with the left fixing part 4 and the right fixing part 5 in height, so as to ensure the planeness consistency between the third body piece 31 and the left fixing part 4 and the right fixing part 5.

[0052] In the embodiment, the first terminal 6 is provided with a first bending section 61 at one end of the first terminal slot 111, the second terminal slot 211 and the fourth terminal slot 311, and the first bending section 61 is 90 degrees bent on the first terminal 6. The second terminal 7 is provided with a second bending section 71 at one end of the third terminal slot 212 and the fourth terminal slot 311, and the second bending section 71 is 90 degrees bent on the second terminal 7.

[0053] In the embodiment, the first body piece 11, the second body piece 21, the third body piece 31, the left fixing part 4 and the right fixing part 5 are consistent in height.

[0054] In the embodiment, the first body piece 11 and the third body piece 31 are of a common mold structure, and are designed with holding structures matched with other film assemblies, so as to effectively reduce the mold opening cost. Further, the first body piece 11 is provided with a plurality of first splicing slots 13, the first splicing slots 13 are arranged on the side of the first body piece 11 facing the second body piece 21, and the first splicing slots 13 are vertically arranged along the height direction of the first body piece 11. The third body piece 31 is provided with a plurality of second splicing slots 33, the second splicing slots 33 are arranged on the side of the third body piece 31 facing the second body piece 21, and the second splicing slots 33 are vertically arranged along the height direction of the third body piece 31.

[0055] The first splicing part 23 and the second splicing part 24 are respectively arranged on the front and rear end faces of the second main body 21, and are arranged vertically along the height direction of the second main body 21, the first splicing part 23 is matched with the first splicing groove 13, and the first main body 11 is matched and connected with the second main body 21; the second splicing part 24 is matched with the second splicing groove 33, and the third main body 31 is matched and connected with the second main body 21. When the first main body 11 and the third main body 31 are spliced on the front and rear end faces of the second main body 21, the first main body 11, the third main body 31 and the second main body 21 are flush in height, and the flatness consistency between the first main body 11, the third main body 31 and the second main body 21 is ensured.

[0056] Further, the first splicing part 23 comprises a first splicing connecting rib 231 and a first splicing fastener 232, the first splicing fastener 232 is connected with the second main body 21 through the first splicing connecting rib 231, and the first splicing fastener 232 is matched with the first splicing groove 13; the second splicing part 24 comprises a second splicing connecting rib 241 and a second splicing fastener 242, the second splicing fastener 242 is connected with the second main body 21 through the second splicing connecting rib 241, and the second splicing fastener 242 is matched with the second splicing groove 33.

[0057] The following relates to the mounting method of the multi-row multi-pin electric connector:

[0058] Step 1: the first terminal 6 is inserted into the first terminal groove 111 of the first main body 11, so that the first terminal 6 is assembled into a whole with the first main body 11, after insertion, one end of the first terminal 6 passing through the first terminal groove 111 is bent into a first bending section 61, and a first terminal assembly 1 is formed.

[0059] Step 2: the first terminal 6 and the second terminal 7 are inserted into the second terminal groove 211 and the third terminal groove 212 of the second main body 21, so that the first terminal 6 and the second terminal 7 are assembled into a whole with the second main body 21, after insertion, one end of the first terminal 6 passing through the second terminal groove 211 is bent into a first bending section 61, and one end of the second terminal 7 passing through the third terminal groove 212 is bent into a second bending section 71, and a second terminal assembly 2 is formed.

[0060] Step 3: the first terminal 6 and the second terminal 7 are inserted into the fourth terminal groove 311 and the fifth terminal groove 312 of the third main body 31, so that the first terminal 6 and the second terminal 7 are assembled into a whole with the third main body 31, after insertion, one end of the first terminal 6 passing through the fourth terminal groove 311 is bent into a first bending section 61, and one end of the second terminal 7 passing through the fifth terminal groove 312 is bent into a second bending section 71, and a third terminal assembly 3 is formed.

[0061] Step 4: the first terminal assembly 1 and the second terminal assembly 2 are connected by the first splicing part 23 and the first splicing groove 13.

[0062] Step 5: the third terminal assembly 3 and the second terminal assembly 2 are connected by the second splicing part 24 and the second splicing groove 33.

[0063] Step 6: the left fixing part 4 is spliced with the first mounting part 12, the second mounting part 22 and the third mounting part 32 through the first left mounting groove 41, the second left mounting groove 42 and the third left mounting groove 43, so that the first terminal assembly 1, the second terminal assembly 2 and the third terminal assembly 3 are spliced and fixed on the left fixing part 4.

[0064] Step 7: the right fixing part 5 is spliced with the first mounting part 12, the second mounting part 22 and the third mounting part 32 through the first right mounting groove 51, the second right mounting groove 52 and the third right mounting groove 53, so that the first terminal assembly 1, the second terminal assembly 2 and the third terminal assembly 3 are spliced and fixed on the right fixing part 5, thereby forming the multi-row multi-pin electrical connector.

[0065] The utility model relates to a kind of multi-row multi-pin electrical connectors, the utility model, first main part 11 and third main part 31 are common mode structure, left fixing part 4 and right fixing part 5 are common mode structure, the height of first main part 11, second main part 21, third main part 31, left fixing part 4 and right fixing part 5 is consistent and designed with the splicing fixed structure of mutual matching, can effectively reduce mold cost, the flatness of the first main part 11, second main part 21, third main part 31, left fixing part 4 and right fixing part 5 after combination keep consistent, avoid affecting the transmission quality of signal and the problem of poor contact.

[0066] In the utility model, the first terminal 6, second terminal 7 can be directly inserted in first main part 11, second main part 21, third main part 31 and be bent and handled, form first terminal assembly 1, second terminal assembly 2, third terminal assembly 3, so that Insertmolding terminal placement operation is simple, effectively reduce production cycle, avoid the problem of plastic filling bad.

[0067] In addition, the first terminal assembly 1, the second terminal assembly 2, the third terminal assembly 3, the left fixing piece 4 and the right fixing piece 5 are designed to be shared, and the mold parts can be flexibly interchanged, thereby greatly improving the production efficiency.

[0068] Embodiment two:

[0069] Different from the embodiment one, as shown in the figure, the first main body piece 11, the second main body piece 21 and the third main body piece 31 are not connected by the buckle, but are injection molded by the common mold structure. Figures 14-18 The first terminal 6 and the second terminal 7 are inserted into the terminal groove of the first main body piece 11, the second main body piece 21 and the third main body piece 31, and the tin legs of the first terminal 6 and the second terminal 7 are bent, thereby forming the first terminal assembly 1, the second terminal assembly 2 and the third terminal assembly 3.

[0070] In the embodiment two, when the terminal groove of the second terminal 7 is made, the terminal groove of the second terminal 7 is a common mold structure, and only the mold part of the second terminal 7 needs to be replaced during injection molding, so the mold parts with the same structure can be flexibly interchanged and matched when the first main body piece 11, the second main body piece 21 and the third main body piece 31 are injection molded, thereby avoiding the problem of overall scrapping caused by single item defect.

[0071] The above embodiment only describes the preferred embodiment of the utility model, and does not limit the scope of the utility model. Without departing from the design spirit of the utility model, various deformations and improvements of the technical solutions of the utility model made by ordinary engineering and technical personnel in the field shall fall within the protection scope determined by the claims of the utility model.

Claims

1. A multi-row, multi-pin electrical connector, characterized by: The application relates to a terminal assembly, which comprises a first terminal component, a second terminal component, a third terminal component, a left fixing member and a right fixing member.

2. A multi-row multi-pin electrical connector as claimed in claim 1, wherein: The left fixing member is provided with a first left mounting groove, a second left mounting groove and a third left mounting groove, and the right fixing member is provided with a first right mounting groove, a second right mounting groove and a third right mounting groove; the left and right sides of the first terminal component are fixedly connected with the first left mounting groove and the first right mounting groove respectively, the left and right sides of the second terminal component are fixedly connected with the second left mounting groove and the second right mounting groove respectively, and the left and right sides of the third terminal component are fixedly connected with the third left mounting groove and the third right mounting groove respectively.

3. A multirow multi-pin electrical connector as claimed in claim 2, wherein: The first terminal component comprises a first main body, a plurality of first terminal grooves are arranged on the first main body and penetrate through the first main body, and a plurality of first terminals are arranged on the first terminal component and inserted into the first terminal grooves.

4. A multirow multi-pin electrical connector as claimed in claim 3, wherein: The left and right sides of the first main body are provided with a pair of first mounting portions matched with the first left mounting groove and the first right mounting groove, and the first main body is connected with the first left mounting groove and the first right mounting groove through the first mounting portions.

5. A multirow multi-pin electrical connector as claimed in claim 2, wherein: The second terminal component comprises a second main body, a plurality of second terminal grooves and third terminal grooves are arranged on the second main body and penetrate through the second main body, a plurality of first terminals and second terminals are arranged on the second terminal component, the first terminals are inserted into the second terminal grooves, and the second terminals are inserted into the third terminal grooves.

6. A multirow multi-pin electrical connector as claimed in claim 5, wherein: The left and right sides of the second main body are provided with a pair of second mounting portions matched with the second left mounting groove and the second right mounting groove, and the second main body is connected with the second left mounting groove and the second right mounting groove through the second mounting portions.

7. A multirow multi-pin electrical connector as claimed in claim 2, wherein: The third terminal component comprises a third main body, a plurality of fourth terminal grooves and fifth terminal grooves are arranged on the third main body and penetrate through the third main body, a plurality of first terminals and second terminals are arranged on the third terminal component, the first terminals are inserted into the fourth terminal grooves, and the second terminals are inserted into the fifth terminal grooves.

8. A multirow multi-pin electrical connector as claimed in claim 7, wherein: The left and right sides of the third main body are provided with a pair of third mounting portions matched with the third left mounting groove and the third right mounting groove, and the third main body is connected with the third left mounting groove and the third right mounting groove through the third mounting portions.

9. A multirow multi-pin electrical connector as set forth in claim 1, further comprising: The first terminal assembly is provided with a plurality of first splicing grooves arranged on the side of the first terminal assembly facing the second terminal assembly; the third terminal assembly is provided with a plurality of second splicing grooves arranged on the side of the third terminal assembly facing the second terminal assembly; wherein the front and rear end faces of the second terminal assembly are provided with a first splicing part and a second splicing part, the first splicing part is spliced and matched with the first splicing groove, so that the first terminal assembly and the second terminal assembly are connected; the second splicing part is spliced and matched with the second splicing groove, so that the third terminal assembly and the second terminal assembly are connected.

10. A multirow multi-pin electrical connector as claimed in claim 9, wherein: The first splicing part comprises a first splicing connecting rib and a first splicing fastener, the first splicing fastener is connected with the second main body through the first splicing connecting rib, and the first splicing fastener is matched with the first splicing groove; the second splicing part comprises a second splicing connecting rib and a second splicing fastener, the second splicing fastener is connected with the second main body through the second splicing connecting rib, and the second splicing fastener is matched with the second splicing groove.